• 제목/요약/키워드: A. makuwa

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Phytoseiid Mites (Acari: Phytoseiidae) from Korean Apple Orchards and Their Ecological Notes (사과원에 서식하는 포식성 이리응애류(Acari: Phytoseiidae)의 종류 및 생태)

  • 정철의;김시용;이순원;이준호
    • Korean journal of applied entomology
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    • v.42 no.3
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    • pp.185-195
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    • 2003
  • Phytoseiid mites are important predators of spider mites, rust mites and many of insect pests as well. From two-year (2001-2002) survey of apple orchards in Kyoungbuk and Suwon area, 13 species of phytoseiids, 12 species of the genus Amblyseius and one species of the genus Typhlodromus were found. Among them, Amblyseius womersleyi was the most dominant followed by A. rademacheri, A. orientalis, and A. makuwa. Amblyseius rademacheri and A. makuwa were mainly found from ground vegetation. Keys to genera and species were presented with some pictorial details and ecological notes of each species. Further discussion on systematics of the family Phytoseiidae and use in apple IPM were suggested.

Soft Rot on Cucumis melo var. makuwa Caused by Rhizopus oryzae

  • Kwon, Jin-Hyeuk;Kim, Jin-Woo;Lee, Yong-Hwan;Shim, Hong-Sik
    • Mycobiology
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    • v.38 no.4
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    • pp.336-338
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    • 2010
  • Rhizopus oryzae is reported for the first time on Cucumis melo L. var. makuwa Makino. A detailed description of this Korean specimen is given, along with its rDNA internal transcribed spacer sequence. On the basis of mycological characteristics and molecular data, the fungus was identified as R. oryzae Went & Prinsen Geerligs.

Phytoseiid Mites (Acari: Phytoseiidae) of Pear Orchards Cheonan Area in Korea (천안지역 배 과원에 서식하는 포식성 이리응애류 (응애아강: 이리응애과))

  • Jung, Chul-Ui;Lee, Joon-Ho
    • The Korean Journal of Soil Zoology
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    • v.9 no.1_2
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    • pp.24-28
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    • 2004
  • Predaceous phytoseiid mites can be important components in integrated mite management program including bio-logical control of spider mites. While conducting population study of prey-predator system in pear orchards, 6 predaceous phytoseiids were found. Amblyseius womersleyi, A. eharai, A. kokufuensi and A. finlandicus were mostly found from tree canopy. While A. rademacheri was restricted in ground vegetation, A. makuwa was equally distributed in ground vegetation and tree trunk. Some ecological information for each species was reviewed. Strate-gies for their potential utility in pest management program and future study area were discussed.

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A new record of phytoseiid mite, Neoseiulus harrowi Collyer, 1964 (Acari: Mesostigmata) from Republic of Korea

  • Keum, Eunsun;Jung, Chuleui
    • Journal of Species Research
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    • v.6 no.spc
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    • pp.58-62
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    • 2017
  • During a study of acarine biodiversity, a phytoseiid mite was collected from soil samples under the rose of Sharon plants. The specimen was identified as Neoseiulus harrowi Collyer, 1964, which was previously only reported in New Zealand and Australia, and is thus a new record for Korean phytoseiid fauna. Neoseiulus harrowi is morphologically similar to N. makuwa (Ehara), but distinctly different in two characters: shorter length of two posterior setae (Z4, Z5) and a forked atrium of spermatheca longer in N. makuwa than in N. harrowi in females.

Effect of the ice pack treatment in the corrugated box for improving the storage quality of the oriental melon (Cucumis melo var. makuwa) at high temperature conditions during summer (여름철 고온 환경 조건에서 참외(Cucumis melo var. makuwa)의 저장 중 선도유지를 위한 아이스 팩 처리 포장 박스 적용 연구)

  • Choi, Woo Suk;Chung, Dae-Sung;Lee, Youn Suk
    • Food Science and Preservation
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    • v.21 no.1
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    • pp.25-33
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    • 2014
  • The effects of the ice pack and aluminum coated board in the corrugated boxes for maintaining the quality of fresh oriental melons (Cucumis melo var. makuwa) were investigated. The harvested oriental melons were stored at a temperature of $30^{\circ}C$ for 21 days after placing them in the corrugated boxes treated with control, including ice pack and aluminum coated board. The treatment with the ice pack and aluminum coated board was identified to have maintained the relative low temperature in the corrugated box against the high temperature from the environment. For the storage study of the oriental melon, the treatments with the ice pack and aluminum coated board reduced the respiration rate, the development of external color, and total weight loss. All treatments were also effective in maintaining the firmness and decreasing the decay ratio of the oriental melon as compared to those that were controlled. However, the value of total soluble solids regarding the fruit was insignificantly affected by the ice pack treatment. The results indicated that the application of the ice pack and aluminum coated board in the corrugated box played an important role in maintaining the quality of oriental melons during storage. The combination with the ice pack and aluminum coated board had more effective values on the storage qualities for oriental melons than that with the ice pack only. Based on the results of this study, the ice pack and aluminum coated board were the useful treatments for reducing the loss of quality of the fresh oriental melons in high temperature storage conditions.

Vegetative Compatibility Groups and Pathogenicity Variation among Isolates of Fusarium oxysporum f.sp. melonis

  • Ahn, Il-Pyung;Lee, Yong-Hwan
    • The Plant Pathology Journal
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    • v.16 no.4
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    • pp.227-230
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    • 2000
  • A total of 90 isolates of Fusarium oxysporum f.sp. melonis, the causal agent of oriental melon (Cucumis melo var. makuwa) wilt, was isolated from symptomatic tissues of oriental melon from 4 provinces in Korea. These isolates were grouped into vegetative compatibility groups (VCGs) by demonstrating heterokaryosis through complementation using nitrate nonutilizing (nit) mutants. No self-incompatibility was observed in any of isolates. All isolates were grouped into 3 VCGs ; A, B, and C. iSOLATES BELONGING TO VCG A and VCG B accounted for 87% and 91% of the fungal population collected in 1991 and 1993, respectively. As the increment of cultivation period in the same field, the proportion of isolates belonging to VCG B increased whereas that of isolates belonging to VCG A decreased. Mean virulence of a total population increased as the increment of cultivation period in the same field. Isolates belonging to VCG B showed the highest increment of virulence. These data suggest that replanting of a host plant in the same field may cause increase of virulence in the pathogens. Furthermore, virulence of F. oxysporum f.sp. melonis isolates is related to the VCGs.

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Hypoglycemic Activity of the Hexane Extract of Oriental Melon (Cucumis melo L. var. makuwa Makino) Seeds and Its Active Compounds

  • Chen, Lei;Kim, Hye Suk;Choi, Bo-Ram;Yang, Shaonan;Xu, Enning;Suh, Jun Kyu;Kang, Young-Hwa
    • Korean Journal of Plant Resources
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    • v.27 no.6
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    • pp.622-628
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    • 2014
  • The aim of this work is to evaluate the potential of oriental melon (Cucumis melo L. var. makuwa Makino) seeds for the management of type 2 diabetes by controlling glucose absorption. The ${\alpha}$-glucosidase and ${\alpha}$-amylase inhibitory effects of the hexane extracts from oriental melon seeds were investigated. A bioassay-guided fractionation technique was used to elucidate the principal active components. The results show that the hexane extract from oriental melon seeds exhibited high inhibitory activities against ${\alpha}$-glucosidase and ${\alpha}$-amylase. The hexane extract was further fractionated into four sub-fractions. Among them, the sub-fraction F-1 exhibited the most potent anti-diabetic effect. The active components were isolated and identified by gas chromatography/mass spectroscopy (GC-MS). Free fatty acids showed significant hypoglycemic activity (p < 0.001) and fatty acid composition influenced enzyme inhibitory activities. These results suggest that oriental melon seeds could be used to prevent type 2 diabetes.

De Novo Transcriptome Analysis of Cucumis melo L. var. makuwa

  • Kim, Hyun A;Shin, Ah-Young;Lee, Min-Seon;Lee, Hee-Jeong;Lee, Heung-Ryul;Ahn, Jongmoon;Nahm, Seokhyeon;Jo, Sung-Hwan;Park, Jeong Mee;Kwon, Suk-Yoon
    • Molecules and Cells
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    • v.39 no.2
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    • pp.141-148
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    • 2016
  • Oriental melon (Cucumis melo L. var. makuwa) is one of six subspecies of melon and is cultivated widely in East Asia, including China, Japan, and Korea. Although oriental melon is economically valuable in Asia and is genetically distinct from other subspecies, few reports of genome-scale research on oriental melon have been published. We generated 30.5 and 36.8 Gb of raw RNA sequence data from the female and male flowers, leaves, roots, and fruit of two oriental melon varieties, Korean landrace (KM) and Breeding line of NongWoo Bio Co. (NW), respectively. From the raw reads, 64,998 transcripts from KM and 100,234 transcripts from NW were de novo assembled. The assembled transcripts were used to identify molecular markers (e.g., single-nucleotide polymorphisms and simple sequence repeats), detect tissue-specific expressed genes, and construct a genetic linkage map. In total, 234 single-nucleotide polymorphisms and 25 simple sequence repeats were screened from 7,871 and 8,052 candidates, respectively, between the KM and NW varieties and used for construction of a genetic map with 94 F2 population specimens. The genetic linkage map consisted of 12 linkage groups, and 248 markers were assigned. These transcriptome and molecular marker data provide information useful for molecular breeding of oriental melon and further comparative studies of the Cucurbitaceae family.

Anticancer Effects of the Extracts of Oriental Melon (Cucumis melo L. var makuwa Makino) Seeds (참외(Cucumis melo L. var makuwa Makino) 종자 추출물의 항암 활성)

  • Kim, Jung-Hyun;Suh, Jun-Kyu;Kang, Young-Hwa
    • Korean Journal of Plant Resources
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    • v.25 no.5
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    • pp.647-651
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    • 2012
  • The objective of this study was to investigate the anticancer effects of the extracts of oriental melon seeds. Various solvent extracts of oriental melon seeds were prepared and their anticancer effects were examined using in vitro MTT and CV assays. The anticancer effects of various extracts of oriental melon seeds were also examined in five human cancer cell lines including A549, AGS, HT-29, MCF-7 and HepG2. The ethanol extract of heated oriental melon seeds showed the potent cytotoxic effects especially against mouse hepatoma cell line(Hepa1c1c7), human hepatoma cell line(HepG2) and human breast cancer cell line(MCF-7). These data suggest that oriental melon seeds can be a promising anticancer agent against human liver and breast cancer.

The Effects of CaCl2 Foliar Application on Inhibition of Abnormally Fermented Fruits and Chemical Composition of Oriental Melon(Cucumis melo L. var. makuwa Mak.) (CaCl2의 엽면처리(葉面處理)가 참외의 이상발효과 발생억제 및 과실성분(果實成分)에 미치는 영향)

  • Chung, Hee-Don;Youn, Sun-Joo;Choi, Young-Jun
    • Horticultural Science & Technology
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    • v.16 no.2
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    • pp.215-218
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    • 1998
  • The effects of $CaCl_2$ foliar application on inhibition of the occurrence of abnormally fermented fruit and chemical composition of oriental melon (Cucumis melo L. var. makuwa Mak. cv. Gumssaragi-eunchun) were examined. $CaCl_2$, applied at 0.3~0.7%, had an apparent inhibitory effect on occurrence of abnormally fermented fruit when sprayed three times at five days intervals from 10 days after flowering. The effect of $CaCl_2$ was diminished when the field was irrigated during the ripening period. Sugar content in the fruits was not affected by the $CaCl_2$ treatment. The Ca content was higher in the normal fruit than in the fermented ones, but no difference was noted in the K and Mg levels. The occurrence of fermented fruit was increased when the applying nitrogen levels were less (10kg) or higher (25kg/10a) than normal supply. The nitrogen application had no effect on the calcium content in fruits.

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